Dead cutter device for disc chipper

Abstract

The utility model discloses a dead knife device for a disc chipper, which relates to the technical field of disc chippers, is arranged on one side of a cutterhead at the bottom of the disc chipper and comprises a guide rail, an overturning frame is arranged on the guide rail, a dead knife rest is arranged at the top of the overturning frame, and a dead knife is arranged on the dead knife rest. A plurality of pressing blocks are detachably arranged at the top of the dead knife; a displacement device is arranged at the front end of the dead knife rest and connected with the driving device. According to the device, the width of a gap between the dead knife and the cutter head can be adjusted, logs are prevented from being sliced into very thin or very long strips, the length and the thickness of the logs in the cutting process are improved, and the subsequent production efficiency and the product quality are improved; meanwhile, the dead knife rest can retreat along the guide rail, a plurality of pressing blocks are detached, and the dead knife is overturned through the overturning frame, so that the dead knife is convenient to maintain or replace; therefore, the replacement process of the dead knife is simplified, the downtime of production is effectively reduced, and the working continuity and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disc chippers, in particular to a bottom knife device for a disc chipper. Background Art

[0002] In the papermaking industry, the quality requirements for finished paper products are getting higher and higher, which means that the quality requirements for raw materials are getting higher and higher. Before the logs enter the pulping process, they need to be sliced. The general processing technology of paper mills is to use a disc chipper to slice the logs into wood chips of uniform thickness and size.

[0003] In the related art, a disc chipper has a number of flying knives installed on a cutter disc, which rotates the cutter disc through an output shaft, so that the flying knives complete the slicing action of the logs. However, the width of the gap between the flying knives and the bottom knife directly affects the slicing quality of the disc chipper. If the width of the gap is too wide or too narrow, the logs will be cut into very thin or very long strips, affecting the slicing quality of the logs, thereby affecting the quality of subsequent screening, transportation and pulping. At the same time, the bottom knife is often impacted by logs and wears very quickly. The bottom knife replacement operation of the existing disc chipper is complicated and requires shutdown for replacement, which affects work continuity and work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a bottom knife device for a disc chipper to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bottom knife device for a disc chipper is arranged on one side of a bottom knife disc of the disc chipper, comprising:

[0007] A guide rail, wherein a turning frame is arranged at one end of the guide rail, a bottom knife frame is arranged at the top of the guide rail, and a bottom knife is arranged on the bottom knife frame;

[0008] A plurality of pressing blocks are detachably provided on the top of the bed knife;

[0009] A displacement device is arranged at the front end of the bottom blade holder, and the displacement device is connected to the driving device.

[0010] The disc chipper bed knife that is easy to disassemble according to this solution has at least the following technical effects:

[0011] The bottom knife device of the disc chipper can adjust the gap width between the bottom knife and the knife disc by arranging a displacement device, so that the cutting resistance can be reduced, and the logs can be prevented from being sliced ​​into very thin or very long strips, thereby improving the length and thickness of the logs during the cutting process, and improving the subsequent production efficiency and product quality; at the same time, the bottom knife frame can be withdrawn along the guide rail, a number of pressing blocks can be disassembled, and the bottom knife can be turned over by the turning frame, so that the bottom knife can be repaired or replaced easily; thus, the replacement process of the bottom knife is simplified, the production downtime is effectively reduced, and the work continuity and work efficiency are improved.

[0012] As a further solution of the utility model: one end of the bottom knife forms an angle α with the guide rail, and the angle is 10°-25°.

[0013] Since one end of the bed knife forms an angle α with the guide rail, and the angle is 10°-25°, the log can enter the cutting area of ​​the bed knife more smoothly, reducing the restriction on the size of the log, so that the bed knife can adapt to logs of different specifications, effectively enhancing the cutting adaptability range of the bed knife, and improving the cutting ability and cutting efficiency of the bed knife.

[0014] As a further solution of the utility model: the displacement device includes a first inclined wedge block and a second inclined wedge block, and the inclined surface of the first inclined wedge block is arranged corresponding to the inclined surface of the second inclined wedge block.

[0015] Since the displacement device includes a first oblique wedge block and a second oblique wedge block, the inclined surface of the first oblique wedge block is arranged corresponding to the inclined surface of the second oblique wedge block, and the second oblique wedge block is driven by the driving device, the inclined surface of the first oblique wedge block fits with the inclined surface of the second oblique wedge block and presses against each other, and pushes the bottom knife frame to move, thereby driving the bottom knife to move, so that the gap width between the bottom knife and the knife disc can be adjusted, which can effectively improve the length and thickness of the log slices and improve the slicing quality of the logs; at the same time, during the slicing process, when the bottom knife is subjected to impact force, the displacement device can transfer the impact force to the groove on the guide rail through the bottom knife frame, so as to avoid the gap width between the bottom knife and the flying knife from becoming larger due to impact.

[0016] As a further solution of the utility model: a plurality of flying knives are arranged in the knife disc.

[0017] As a further solution of the utility model: the cutting edges of the plurality of flying knives are arranged parallel to the bottom knife.

[0018] Since a plurality of flying knives are arranged in the cutter disc, the cutting edges of the flying knives are arranged parallel to the bottom knife, so that the flying knives and the bottom knife maintain a consistent cutting force, thereby improving the cutting stability and consistency of the logs, ensuring the cutting accuracy of the logs, and effectively improving the cutting quality of the logs.

[0019] As a further solution of the utility model: the distance between the bottom knife and the flying knife is 0.6mm-0.8mm.

[0020] By controlling the gap width between the bottom knife and the flying knife to 0.6mm-0.8mm, the bottom knife and several flying knives maintain an appropriate gap width, which can ensure the stability of the cutting process and avoid the logs being sliced ​​into very thin or very long strips due to the gap being too wide or too narrow, thereby improving the uniformity and consistency of the log slices.

[0021] As a further solution of the utility model: the driving device is a cylinder and is arranged on one side of the bottom tool holder.

[0022] Since the driving device is an oil cylinder and is arranged on one side of the bottom knife frame, the oil cylinder provides power so that the flip frame can flip the bottom knife, which is convenient for repair or replacement of the bottom knife, thereby improving the convenience and efficiency of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the structure of a bottom knife device for a disc chipper;

[0025] Figure 2 It is a partial structural schematic diagram of a bottom knife device for a disc chipper;

[0026] Figure 3 The present invention is a partial structural schematic diagram of a bottom knife device for a disc chipper.

[0027] Reference numerals:

[0028] 101, guide rail; 102, turning frame; 103, bottom knife frame; 104, bottom knife; 105, pressure block; 106, displacement device; 1061, first oblique wedge block; 1062, second oblique wedge block; 107, oil cylinder; 201, knife disc; 202, flying knife. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] like Figure 1-3 The utility model embodiment shown is a bottom knife device for a disc chipper, which is arranged on one side of the bottom knife disc 201 of the disc chipper, and includes: a guide rail 101, a turning frame 102 is arranged at one end of the guide rail 101, a bottom knife frame 103 is arranged on the top of the guide rail 101, and a bottom knife 104 is arranged on the bottom knife frame 103; a plurality of pressure blocks 105 are detachably arranged on the top of the bottom knife 104; a displacement device 106 is arranged at the front end of the bottom knife frame 103, and the displacement device 106 is connected to the driving device.

[0036] Specifically, the bottom knife device of the disc chipper can adjust the gap width between the bottom knife 104 and the cutter disc 201 by setting a displacement device 106, so that the cutting resistance can be reduced, and the logs can be prevented from being sliced ​​into very thin or very long strips, thereby improving the length and thickness of the logs during the cutting process, and improving the subsequent production efficiency and product quality; at the same time, the bottom knife frame 103 can be withdrawn along the guide rail 101, and several pressing blocks 105 can be disassembled, and the bottom knife 104 can be turned over by the turning frame 102, so as to facilitate the maintenance or replacement of the bottom knife 104; thus, the replacement process of the bottom knife 104 is simplified, the production downtime is effectively reduced, and the work continuity and work efficiency are improved.

[0037] like Figure 2 As shown, one end of the bottom knife 104 forms an angle α with the guide rail 101, and the angle is 10°-25°.

[0038] Specifically, since one end of the bed knife 104 forms an angle α with the guide rail 101, and the angle is 10°-25°, the log can enter the cutting area of ​​the bed knife more smoothly, reducing the restriction on the size of the log, so that the bed knife can adapt to logs of different specifications, effectively enhancing the cutting adaptability range of the bed knife, and improving the cutting ability and cutting efficiency of the bed knife 104.

[0039] like Figure 3 As shown, the displacement device 106 includes a first inclined wedge block 1061 and a second inclined wedge block 1062 , and the inclined surface of the first inclined wedge block 1061 is arranged corresponding to the inclined surface of the second inclined wedge block 1062 .

[0040] Specifically, since the displacement device 106 includes a first inclined wedge block 1061 and a second inclined wedge block 1062, the inclined surface of the first inclined wedge block 1061 is arranged corresponding to the inclined surface of the second inclined wedge block 1062, and the second inclined wedge block 1062 is driven by the driving device, so that the inclined surface of the first inclined wedge block 1061 and the inclined surface of the second inclined wedge block 1062 fit together and press against each other, and push the bottom knife holder 103 to move, thereby driving the bottom knife 104 to move, so that the gap width between the bottom knife 104 and the knife disc 201 can be adjusted, which can effectively improve the length and thickness of the log slices, and improve the slicing quality of the logs.

[0041] like Figure 1 As shown, a plurality of flying knives 202 are arranged in the knife disc 201 ; the cutting edges of the plurality of flying knives 202 are arranged parallel to the bottom knife 104 .

[0042] Specifically, since a plurality of flying knives 202 are arranged in the knife disc 201, the cutting edges of the flying knives 202 are arranged parallel to the bottom knife 104, so that the flying knives 202 and the bottom knife 104 maintain a consistent cutting force, thereby improving the cutting stability and consistency of the logs, ensuring the accuracy of log cutting, and effectively improving the cutting quality of the logs; at the same time, during the slicing process, when the bottom knife 104 is subjected to impact force, the displacement device 106 can transfer the impact force to the groove on the guide rail 101 through the bottom knife frame 103, so as to avoid the gap width between the bottom knife 104 and the flying knives 202 from becoming larger due to the impact.

[0043] Furthermore, the distance between the bottom knife 104 and the plurality of flying knives 202 is 0.6 mm-0.8 mm.

[0044] Specifically, by controlling the gap width between the base knife 104 and the flying knives 202 to 0.6mm-0.8mm, the base knife 104 and the flying knives 202 maintain an appropriate gap width, which can ensure the stability of the cutting process and avoid the log being sliced ​​into very thin or very long strips due to the gap being too wide or too narrow, thereby improving the uniformity and consistency of the log slices.

[0045] like Figure 3 As shown, the driving device is an oil cylinder 107 , and is arranged on one side of the bottom tool holder 103 .

[0046] Specifically, since the driving device is a cylinder 107 and is arranged on one side of the bottom knife frame 103, the cylinder 107 provides power so that the flip frame 102 can flip the bottom knife 104, which is convenient for repairing or replacing the bottom knife 104, thereby improving the convenience and efficiency of maintenance operations.

[0047] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A bottom knife device for a disc chipper, arranged on one side of a bottom knife disc (201) of the disc chipper, characterized in that: include: A guide rail (101), wherein a turning frame (102) is arranged at one end of the guide rail (101), a bottom knife frame (103) is arranged at the top of the guide rail (101), and a bottom knife (104) is arranged on the bottom knife frame (103); A plurality of pressing blocks (105) are detachably provided on the top of the bottom knife (104); A displacement device (106) is provided at the front end of the bottom blade holder (103), and the displacement device (106) is connected to a driving device.

2. The bottom blade device for a disc chipper according to claim 1, characterized in that: One end of the bottom knife (104) forms an angle α with the guide rail (101), and the angle is 10°-25°.

3. The bottom blade device for a disc chipper according to claim 1, characterized in that: The displacement device (106) comprises a first inclined wedge block (1061) and a second inclined wedge block (1062), and the inclined surface of the first inclined wedge block (1061) is arranged corresponding to the inclined surface of the second inclined wedge block (1062).

4. The bottom blade device for a disc chipper according to claim 1, characterized in that: A plurality of flying knives (202) are arranged in the knife disc (201).

5. The bottom blade device for a disc chipper according to claim 4, characterized in that: The cutting edges of the plurality of flying knives (202) are arranged parallel to the bottom knife (104).

6. The bottom blade device for a disc chipper according to claim 5, characterized in that: The distance between the bottom knife (104) and the plurality of flying knives (202) is 0.6 mm to 0.8 mm.

7. The bottom knife device for a disc chipper according to any one of claims 1 to 6, characterized in that: The driving device is an oil cylinder (107) and is arranged on one side of the bottom blade frame (103).

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